Car-wheel lathe.



Patented Aug. 16, 1910.

A w///////// W W T SEARS CAB WHEEL LATE-E. APPLICATION nun APR 6 1910 Rls Fsrsks co, wasmuumu, n. c.

unirnn STATES PATENT orrioe.

WILLARD THOMAS SEARS, 0F PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO NILES- BEMENT-PONI) COMPANY, OF JERSEY CITY, NEW JERSEY.

oAn-wi nnL LATHE.

96.7 5173 Specification of Letters Patent. Patented Aug. 16, 1910.

filed April 6, 1910. Serial No. 553,783.

Application To all whom it may concern:

Be it known that I, WIL ARD THOMAS Snnns, a citizen of the United States, residing at Philadelphia, Philadelphia county, Pennsylvania, have invented certain new and useful Improvements in Gar-Wheel Lathes, of which the following is a specification.

This invention, pertaining to improvements in lathes designed. for the turning of the treads of car wheels while the wheels are on their axle, will be readily understood from the following description taken in connection with the accompanying drawing in which Figure 1 is a rear elevation of a car wheel lathe embodying an exemplification of my present improvements, tool-rests and piping being omitted: Fig. 2 a vertical transverse section of the same in the plane of line a of Fig. 1 and line 1) of Figs. 1 and 3: Fig. 3 a vertical longitudinal sec ion of the arbor, in the plane of line 0 of Figs. 2 and 4E: and Fig. t a face view of one of the drivingplates shown partly in vertical section in the plane of line d in Figs. 1 and 3.

In the drawing :-1, indicates the bed-plate of the lathe: 2, the heads thereon for the support of the hearings in which the journals of the axles are to turn: 3, the center bearing, considered as a whole, mounted on the bed between the two heads: 4:, the hollow arbor mounted in the center bearing: 5, the driving-plates on opposite ends of the arbor: (5, the radial slots in the driving-plates to receive the usual drivers: 7, the driving gear fast on the arbor at its center of length: 8, the longitudinal duced an element of structural weakness usually compensated for by removable tiebolts at the gap. These tie-bolts are inconvenient and involve time in removing an replacing them. My present invention aims bearing without them.

Proceeding with the drawing :--11, indicates the cap of the centerbearing: 12, the gear-guard for the upper portion of the driving gear, this gear-guard being itntegrally formed with the two end portions of the cap of the center bearing: 12 a tail-like extension formed integrally with the gearguard and projecting outwardly therefrom at the side of the arbor opposite gap 4, this extension taking a bearing downwardly on a rigid. support carried by the bed-plate of the lathe: 13, braces extending from the sides of the gear-guard down to the rear outer portions of the cap: and 14-, bolts rigidly uniting the bearing-cap and gearguard to the base of the center-bearing, these bolts being disposed between the centerbearing and the extremity of projection 12 In usual constructions of lathes of this type the gear-guard has been a guard only and made comparatively light, and the cap for the center-bearing has been formed with its two end portions separate from each other and from the gear-guard, each end portion of the cap being bolted rigidly to the base of the center bearing, the rear portions of the capparts being held from lifting under strain by tie-bolts crossing the gap. In; that construction the gear-guard gave no strength to the cap portions. In my present construction the gear-guard becomes a strength element and, in conjunction with the braces 13 permits of the usual tie-bolts being dispensed with. upon the arbor due to the out are upward, tending to open gap 8, a tendency usually compensated for by tie-bolts crossing the gap, as heretofore stated. In the present gap in the rear of the center bearing to permit the inward and outward passage of the axles to the arbor: 9, the radial gap in the arbor, the driving-plates and the driving gear: an 10, the base portion of the center bearing.

As thus far mentioned the parts are or may be of construction usual in this type of car wheel lathes, a well known type in which, the

gap in the arbor having been turned rearward case, where no tie-bolts are employed across to coincide with the gap in the center bearthe gap, bolts 1% are made effic ent in holding, a patch-piece is removed from the gap in ing the cap of the center-bearing down by the driving-wheel, whereupon the wheeled reason of the extension 12 of the gearaxle may be placed in position, after which guard, the upward thrust of the arbor thus the patch-piece is replaced in the gap of the acting on the short end of a lever whose driving-wheel. In lathes of this type the longer end is represented by the distance gapping of the center bearing has introat securing adequate strength to the center The strains between bolts 14 and the extremity of extensien 12 while the shorter end-is represented the cylinders, each cylinder having such a by t e distance between the bolts and the cap p pe: 27, of the center-bearing. Oll through p1pe 26: 28, a handle for manipthe axles to get into the bore of the arbor pressure 30, a three-way valve in this airand from thence feed through the gap in supply pipe: 31, a handle for manipulating the arbor directly into the center bearing, to Valve and 32, the outlet or waste of its injury. M 1 present invention aims to three-way valve 30. avoid this injury to the center bearing and orlnally, cylinders 21 Wlll be in lower to the journal-surface of the arbor. position, as shown, valves 27 Wlll be closed,

roceeding with the drawing :-15, indivalve 30 will be closed or m such position cates the general bore of the arbor with that air pressure is not goin to the reserwhich the gap communicates: 16, three por voir, outlet 32 w1ll be open to the reservoir tions of the bore of contracted diameter, so that the reservoir is tree from an presthese ortion b ing t th t d f th sure, and the reservoir Wlll contain a supply arbor and at its center, the bore having a of oil. The position of the arbor being such tapering enlargement from the center each t t gap COi C tlcS Wlth e g p e way o the end contractions: l7, eccentric center bearing, and the patch of the driving 8 enlargements of the bore at the gapped side 0 the bore: 18, lips extending from each wall of the gap of the arbor inwardly but downwardly concentric with it. Valve riving-plates from the bore of the arbor.

n the operation of the lathe the sand and scale will rattle oh the axles as usual ter-bearing as usual, it is retained by the lips 18 and, owing to the outward flare of t e bore of the arbor, this material finds its way toward the ends of the arbor and finally discharges through the passages 19 to points where it can do no harm.

whereby the cylinders and front ends of the rail sections are caused to rise until the proper vertical adjustment has been given to the wheeled axle to permit the proper ad justment of its end supports, valves 27 then to be closed. In this operation, which requires some care and nicety, while the lifting force has been obtained from an elastic medium under pressure, the transmission of 5 that force has been through the inelastic oil e vertical adjustment of the work while it f l g y llhdel e y vehes is being la d in d removed f th avoldlng any dancing of the work while beposition in which the wheels are to be operg Supported by the eyhhdelsh h the ated upon by the lathe. This particular fea- Wheeled. has been P p y pesltlehed 1 ture 0 my constru ti n i li bl t and secured in the lathethen valve 30 is to wheel lathes of oth r ty be put to such position as to close oil the P di ith th d j ;2( i supply of compressed air and to open outlet t a i f ti l i t i idl 32 from the reservo 1r, and valves 27 are tosupported by the bed of the lathe below the be Opened thus l v ei the 'e Q 115 axial line thereof and in such longitudinal P e e and pel'hhttlhg the eyhhdels f position that one will be under each of the h Seetlehs to drop down to 1191111511 P the usual track mils leading to the rear the wheels so that the wheeled axle may be of the lathe: 23, pivoted rail sections formrolled out rearwardly e 1t deslleth the ing forward prolongations of the track rails, front ends of the relhseetlohs y be t f d d f th t k ti Vated above the normal so that the work resting in notches in the tops of the cylinmay down deehhed Tell seetlehsders; 24, the plvots at the heels of the rail In the particular construction chosen for sections: 25, a reservoir for liquid, oil for examplification the pistons are the fixed eleinstance, and for air: 26, a pipe leading ments and the cylinders are the movable from the reservoir to the interior of one of ones, but equivalents may be found in any suitable piston and cylinder arrangement. Again, it is to be understood that where oil is referred to in connection with the compressed air, any equivalent liquid is in contemplation.

It is to be observed that the bed-plate, at points below the positions which will be occupied by the wheels being turned, presents a plain upper surface. The cylinders 21 which move vertically through perforations in the bed-plate under the car wheels have their upper ends, when the cylinders are down, substantially even with the upper surface of the bed-plate. This relation of parts permits of a ready cleaning away of chips which accumulate in large quantities on the portions of the bed-plate under the car-wheels.

I claim 1. A wheel lathe of gapped arbor type comprising, a gapped center bearing, a gearguard formed integrally with the cap of the center bearing, an integral rigid projection from the gear-guard outwardly in the direction opposite the gap in the center-bearing, a rigid support under the outer extremity of said projection, bolts securing the cap of the center-bearing to the base of the center-bearing and disposed between the center-bearing and said projection, and braces extending from the sides of the gear-guard down to the ends of the cap at the gap in the center bearing, combined substantially as set forth.

2. A wheel lathe of gapped arbor-type comprising an arbor having a gapped bore with a tapering enlargement and with an outlet for foreign matters at the larger portion of the bore, substantially as set forth.

3. A wheel lathe of gapped arbor-type comprising, an arbor having a gapped bore with a tapering enlargement and with an outlet for foreign matters at the larger portion of the bore, and lips extending longitudinally at said bore in the gap therein, combined substantially as set forth.

4:. A wheel-lathe of gapped arbor type comprising an arbor having a gapped bore enlarging from its center toward the ends and having outlets for foreign matters at the ends of the bore, substantially as set forth.

5. A wheel lathe of gapped arbor type comprising, an arbor having a gapped ore enlarging from its center toward the ends and having outlets for foreign matters at the ends of the bore, and lips extending longitudinally in said bore at the gap therein, combined. substantially as set forth.

6. A wheel-lathe of gapped arbor type comprising, an arbor having a gapped bore enlarging from its center toward the ends of the arbor and having radial outlets for foreign matter at the ends of the bore, contractions to the bore at the ends of the arbor endwise beyond said radial outlets, and lips extending from end to end of the bore at the gap therein, combined substantially as set forth.

7. A wheel lathe comprising, a bed, axlecarrying and driving mechanism supported thereby, a vertical cylinder and piston disposed below the axis of the lathe under each wheel-position, movable rail-sections adapted to the wheels on an axle and having their free ends supported by said cylinders and pistons, a reservoir for oil and air, oil-pipes from said reservoir to said cylinders, valves in said oil-pipes to control the flow of oil back and forth between the reservoir and cylinders, an air-pipe leading to said rcservoir and adapted for connection with a source of supply of air under pressure, an air outlet, and valvular mechanism adapted to place the reservoir alternatively in communication with the air supply or the air outlet, combined substantially as set forth.

8. A wheel lathe of gapped arbor type comprising, a gapped center-bearing, an arbor mounted within the bearing and having a gapped bore, a cap for the center-bearing, a gear-guard formed integrally with the cap and having a rigid projection outwardly from the center-bearing in a direction opposite the gap, a rigid support below the outer extremity of said projection, and bolts securing the cap to the base of the centerbearing and disposed between the centerbearing and said projection, combined substantially as set forth. i.

9. A wheel lathe comprising, a bed'plate having a flat upper surface under the positions of the car-wheels, supports and driving apparatus mounted on the bed-plate for the support and driving of a wheel and axlestructure, lifting members working vertically through perforations in the bed-plate and adapted to engage under and vertically adjust the car wheels, and mechanism for vertically adjusting said lifting-members, the upper ends of the lifting-members being normally at substantially the level of the upper surface of the portions of the bedplate through which they work, combined substantially as set forth.

WILLARD THOMAS SEARS.

Witnesses:

WV. J. HAGMAN,

R. RAYMOND PORTER. 

